Current state: Basic tests successful. Should be okay
ToDo: Complete Readme.

borgbackup-docker-alpine

Alpine based Docker image for borgbackup.
Can optionally run mariabackup container to include database server dumps.

Run with:

docker run \
-v /var/run/docker.sock:/var/run/docker.sock \
-v <youruniquename>_dbtemp:/backup/mariadb \
-v /backupsource1:/backup/backuptarget1 \
-v /backupsource2:/backup/backuptarget2 \
-v /backupsource3:/backup/backuptarget3 \
-v /opt/backup/secrets/known_hosts:/root/.ssh/known_hosts \
-v /opt/backup/secrets/id_rsa:/root/.ssh/id_rsa \
-v /opt/backup/secrets/borg_repo_pw:/root/borg_repo_pw \
-v /opt/backup/secrets/mariadb_pw:/root/mariadb_pw \
--name youruniquename \
-h youruniquename \
-e BORG_REPO=ssh://host:port/./<reponame> \
-e BORG_RSH=ssh -i /root/.ssh/id_rsa \
-e BORG_PASSPHRASE=/root/borg_repo_pw \
-e BACKUP_INTERVAL=5min \
-e MARIADB_CONTAINER=your_mariadb_container_to_backup \
-e MARIADB_USER=root \
-e MARIADB_PW=secretadmin \
-e BORG_INIT_CMD=--encryption=repokey \
-e BORG_CREATE_CMD=--stats ::{now:%Y-%m-%d_%H-%M-%S} /backup \
-e BORG_PRUNE_CMD=-n --list --force --keep-last 5 \
shiz0/borgbackup-docker-alpine:latest ```

Edit the name to your liking, adjust the rest according to your requirements.

If optional mount

-v /opt/backup/secrets/mariadb_pw:/root/mariadb_pw

is used, the file contents will be read inside the container and used as password when connecting to the database.
This is to avoid giving the password in cleartext in the environment section.
If you are already using a variable -or docker secrets- for that, you can omit this and set the password in the environment below.

Database backup is optional. If not all of MARIADB_CONTAINER, MARIADB_USER, MARIADB_PW are set, database backup function will be skipped.

BACKUP_INTERVAL can be one of: 5min, 15min, hourly, daily, weekly, monthly or "custom".
If omitted, backup function will be skipped and you could run other borg commands instead.
If "custom" is used, you will have to get the crontab, uncomment the last line and edit the schedule according to your needs. Add

-v /path/to/crontab:/root/crontab \

to the run command to overwrite the default file with yours.

For possible values/usage of BORG_REPO, BORG_RSH, BORG_PASSPHRASE, the BORG_*_CMD variables, as well as other borg commands, please consult the borg documentation at
https://borgbackup.readthedocs.io/

And, last but not least:
Always check your logs, attempt restores etc. to be sure it's working!